150 MPH Speedometer + Tachometer replica Smiths fits Triumph Dimension Details: Bezel = 3 1/4 " (85 mm) Body = 3 1/8  " (80 mm) Depth = 3 1/5 (90 mm) Thread Size for cable  = M12X1 with mounting bracket and 12 v bulbs for illuminaion. should fit many vintage Triumphs BSA Norton Matchless Bikes (confirm fitment at your end before buying)